and today the fbi provided a wake-up call that there may be radicals among us. anwar al awlaki was the world's most wanted man, public enemy number one, encouraging radicals to attack america in his online preaching. the u.s. killed him in a drone strike in 2011, but today we learn awlaki is still helping to recruit terrorists from the grave. overnight the fbi announced charges against four californian men accused of plotting to go to afghanistan to bomb and kill u.s. soldiers. they were disciples of awlaki. >> there was an extensive amount of their admiration for him and, quite frankly, idolizing anwar awlaki. >> reporter: the alleged ringleader, sohiel kabir was a former member of the u.s. air force. the fbi claims the terror cell conducted training and went to shooting ranges and bought tickets to travel to afghanistan through mexico. >> this was a violent extremist network. we took this very, very seriously. >> reporter: according to the fbi's charges, one of the alleged terror cell's members had posted violent extremist media including audio files of awlaki